To know more about the possible options for the formats, you'll find the exhaustive list on the ImageMagick website
Below you'll find a list of the possible syntaxes available in the resize and thumbnail format options
| Size | Description |
|---|---|
| scale% | Height and width both scaled by specified percentage. |
| scale-x%xscale-y% | Height and width individually scaled by specified percentages. (Only one % symbol needed.) |
| width | Width given, height automagically selected to preserve aspect ratio. |
| xheight | Height given, width automagically selected to preserve aspect ratio. |
| widthxheight | Maximum values of height and width given, aspect ratio preserved. |
| widthxheight^ | Minimum values of width and height given, aspect ratio preserved. |
| widthxheight! | Width and height emphatically given, original aspect ratio ignored. |
| widthxheight> | Shrinks images with dimension(s) larger than the corresponding width and/or height dimension(s). |
| widthxheight< | Enlarges images with dimension(s) smaller than the corresponding width and/or height dimension(s). |
| area@ | Resize image to have specified area in pixels. Aspect ratio is preserved. |
ImBundle comes with a form type extension for the SnowcapCoreBundle Image form type. It allows you to specify a format for the image preview displayed next to the field.
$builder->add(
'picture',
'snowcap_core_image',
array(
'file_path' => 'picturePath',
'im_format' => '200x200',
)
);The code above will display an image preview resized to 200x200px next to the image field, very interesting for an admin for example.